Bharat Heavy Electricals Limited (High Pressure Boiler Plant) Tiruchirappalli , TAMIL NADU, INDIA MATERIALS MANAGEMENT

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1 An ISO 9001 Company Bharat Heavy Electricals Limited (High Pressure Boiler Plant) Tiruchirappalli , TAMIL NADU, INDIA MATERIALS MANAGEMENT TITLE Three-Lobed Roots Blowers Phone: / Fax : / baski@bheltry.co.in Reference Number: MM/FBC&HRSG/Blowers Enquiry Date: Due date for submission of quotation: You are requested to quote the Enquiry number date and due date in all your correspondences. This is only a request for Budgetary offer and not an order BHEL/Trichy is looking for... Supply of Three-Lobed Roots Blowers BHEL commercial terms & conditions with Price Bid formats and all annexure can be downloaded from BHEL web site or from the Government tender website (public sector units) Bharath Heavy Electricals Limited) under reference MM/FBC&HRSG/Blowers Tenders should reach us before 14:00 hours on the due date Technical bid will be opened at 14:30 hours on the due date Tenders would be opened in presence of the tenderers who have submitted their offers and who may like to be present. Yours faithfully, For Bharath Heavy Electricals Limited Dy.Manager / Purchase/ FBC&HRSG Page 1 of 1

2 SPEC NO: FBC&HRSG:56BLO:016/REV00 P a g e 1 SPECIFICATION FOR THREE-LOBED ROOTS BLOWERS CONTENTS: 01. SPECIFICATION FOR BLOWER (PAGE 2-4) - 3 PAGES 02. ANNEXURE-A DESIGN INPUT DATA( PROJECT SPECIFIC) - 1 PAGE 03. ANNEXURE-B TECHNICAL SPECIFICATION DATA - 2 PAGES 04. ANNEXURE-C CHECKLIST - 1 PAGE 05. ANNEXURE-D LAYOUT OF BLOWERS - 1 PAGE 06. ANNEXURE-ECI (PROJECT SPECIFIC) a) ANNEXURE-I (Ref: FBC&HRSG:CI:5312:BLR1/ REV01) -2 PAGES NAME SIGNATURE DATE PREPARED CHECKED APPROVED SUDHAKAR BEHERA V.RAGHAVENDRAN M.MADHAPPAN

3 P a g e 2 SPECIFICATION FOR BLOWER 1. SCOPE: 1.1., manufacture, inspection, testing, painting, packing and supply of positive displacement type three-lobed roots blower along with the following accessories: a) Common base frame for blower and motor. b) Suction and discharge silencer c) Non-return flap. d) Pressure relief valve. e) Foundation bolt (Blowers to be placed on Concrete floor). f) Pulleys for both drive and driven side. g) Pulley belts with safety hood. h) Vibration isolation pad. i) Air intake filter with differential pressure switch. j) Vacuum indicator for suction side (One no). k) Pressure gauge for delivery side (One no) l) First fill of lubricant. m) Local bearing temperature gauges (If required in design) n) Special tools for erection & maintenance. o) Commissioning spares. p) Any other requirements needed by supplier Supply of recommended spares (optional) 1.3. Erection and commissioning supervision at site (optional) 1.4. Drive motors are not in the scope of vendor. Refer point-3 of Annexure-I E, C&I (Sheet-2/2). Special Note: All Blowers and its components shall be supplied with CE marking. 2. APPLICATION: The blowers are intended for supplying air for CFBC boiler at the required capacity and pressure as mentioned in Annexure-A. 3. DESIGN CONSIDERATION: 3.1 The sound level & sound pressure level of all individual blower & cumulative sound level & sound pressure level of all operating blowers are to be furnished The heat dissipation of Blowers (individual & cumulative) at design parameters is to be furnished The blower should contain nameplate containing all essential performance data The driving shaft should be sealed with a radial seal ring The contamination level of the intake filter should be read from a maintenance indicator installed at the front side There is no shut-off valve at the inlet and the design shall take care of this The discharge valve should protect the blower from over load Blower shall be designed suitable to function in a sound proof room All the flanged joints should be machined and it should be leak tight Blower shall be designed for 24 hours and 365 days operation Blower should be capable of meeting all requirements as specified in Annexure-A All materials used shall be of tested quality. 4. INSPECTION & TESTING: 4.1. The blower is to be inspected as per the BHEL approved quality plan at vendor's works The blower is to be tested for rated pressure and capacity The blower should be test run at vendor's work as well as at site for a continuous duration of 72Hrs. each. 5. SPARES: Vendor to recommend spares required for 2 years of trouble free operation.

4 P a g e 3 6. DOCUMENTS TO BE SUBMITTED ALONG WITH THE OFFER 6.1. Point wise confirmation to the Specification General arrangement of blowers with major dimensional details and with sufficient views for clear understanding of the blower indicating the floor space requirement The drawing showing the supporting arrangement on floor including static & dynamic loading details at each support to be submitted for purchaser's information Approximate weight of the blower Noise spectrum for all blowers calculation for Capacity of the blower Selection of drive system (drive motor, coupling and rotor) No-load and full-load power calculation considering the minimum and maximum operating conditions Typical quality Plan as per BHEL format (format enclosed) including material, fabrication, assembly, bought out items, no-load test, etc Filled in data sheets as per Annexure-B List of start up / commissioning spares List of recommended spares Schedule of deviations Checklist Typical O&M manual. All documents submitted under this heading should be submitted in 2 sets unless otherwise noted. 7. DOCUMENTS TO BE FURNISHED AFTER AWARD OF CONTRACT: 7.1. Detailed dimensional general arrangement drawing of the total system with cross sectional details, bill of materials and weight of individual parts for purchaser's approval. Drawing shall detail the clearance between roots of lobs, roots and casing Torque requirement of blower and selection of drive rating The drawing showing the supporting arrangement on floor including static & dynamic loading details at each support to be submitted for purchaser's approval Specifications for bought out items Erection & commissioning procedures indicating the sequence, dos and don'ts and checklist Operation & Maintenance manual O & M manuals shall be submitted to BHEL Trichy, prior to dispatch of equipment Manuals generally should contain the following as minimum Datasheet Important instructions (dos and don'ts) System description Installation and storage Operation List of illustrations Maintenance (including lubrication, where necessary) and service Recommended spares Trouble shooting procedure Assembly drawings with part list, bill of materials, dimensional drawings and other applicable details Recommended lubrication schedule & scheme Short term and long term storage instruction manual Manuals should pertain only to the types or model supplied for the Particular contract Quality Plan for purchaser's approval.

5 P a g e 4 All documents submitted under this heading should be submitted in CD with hard copy both in English unless noted otherwise. 8. PAINTING: Special painting. 9. PACKING / SHIPPING: Sea worthy packing. 10. GUARANTEE: Performance (rated flow, head at design point) and power consumption at, noise level at any 1m from the blower shall be guaranteed by the vendor. 11. PENALTY: For every 1.0 KW increase in power consumption of each blower over and above that specified in the offer at the blower's output as specified in Annexure-B, the supplier shall pay a penalty of Rs.1,11,000/ EXCLUSION & DEVIATIONS: Supplier has to indicate clearly the exclusions and deviations in the offer stage itself with specific reasons. Deviation / exclusion will not be entertained after the award of contract. 13. GENERAL: All drawings shall be prepared using AutoCAD 2006 or later version and submitted in Compact Disk. O& M manual shall be prepared and using Microsoft WORD and submitted in Compact Disk. Running Serial Number shall be given for each of the documents submitted and it should be indexed with a cover sheet. The extent of scope stated in Section-1 of this specification is not necessarily exhaustive and it shall not relieve the vendor from his responsibility to provide goods and services necessary to satisfy the performance criteria and guarantee specified.

6 P a g e 5 ANNEXURE-A ( Parameters) SL No DESCRIPTION Unit VAR 01 VAR 02 VAR 03 VAR 04 VAR Name PURGE AND SEAL AIR BLOWER ASH COOLER BLOWER SEAL POT BLOWER FBHE BUNDLE CHAMBER BLOWER FBHE EMPTY CHAMBER BLOWER 2. Medium to be handled Atmospheric Air Volume per blower Nm3/h Nm3/h Nm3/h Total head developed mbar mbar mbar Suction pressure mbar mbar mbar Discharge pressure mbar mbar mbar Temperature of medium 7. C C C Density of medium at Specified temperature 8. Kg/m Kg/m Kg/m Inlet pipe size(od) mm x x x x x Discharge pipe size(od) mm x x x x x Total Quantity No No of Blower under operation at a time No

7 Temp. at inlet Differential Pressure P a g e 6 ANNEXURE-B To be filled & submitted by the vendor along with the offer TECHNICAL SPECIFICATION DATA Sl. No DESCRIPTION Unit VAR 01 VAR 02 VAR 03 VAR 04 VAR Name 2. Medium to be handled 3. Volume per blower imum Pressure at Inlet Pressure at Outlet Density of Medium at specified Temperature. 9. Type of Motor(HV/LV) 10. Speed of motor.

8 Quantity per Boiler Inlet Pipe Size(OD) P a g e 7 Sl. No DESCRIPTION Unit VAR 01 VAR 02 VAR 03 VAR 04 VAR Filter Size 12. Ambient Temperature 13. Relative Humidity imum Out let Pipe Size (OD) Power Consumption Noise Level inside the acoustic hood 19. Noise level out side the hood at 1m distance 20. Noise spectrum with the frequency range 21. Sound Level Spectrum of individual Blower 22. Cumulative Sound Level Spectrum of all Blowers 23. Sound Level of individual Blower ( in db-a) 24. Cumulative Sound Level of individual Blower (in db-a)

9 P a g e 8 CHECKLIST ANNEXURE-C To be filled and submitted by the vendor along with the offer The following documents should be checked and signed by the authorized signatory. Offers not containing any of the documents will be liable for rejection without any further intimation. Vendor in his judgment may add further information, if required. S.NO DESCRIPTION STATUS 1. Point wise confirmation on the specification 2. General arrangement of blower with major dimensional details 3. The drawing showing the supporting arrangement 4. Approximate weight of the blower 5. calculation 6. Selection of drive system 7. Capacity of the blower calculation 8. No load and full load power calculation 9. Typical quality plan as per BHEL format 10. Filled in data sheets as per Annexure-B 11. List of start up / commissioning spares 12. List of recommended spares 13. Schedule of deviations 14. Two sets of above documents Signature of authorized signatory with office seal.

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